Separate downsampled translucency manually updates the view uniform buffer without invalidating the cached view.

UE - Rendering Architecture - RHI - May 20, 2019

In TranslucencyRendering.cpp, FDeferredShadingSceneRenderer::RenderTranslucency, the following code: FViewUniformShaderParameters DownsampledTranslucencyViewParameters; SetupDownsampledTranslucenc ...

FCanvasTriangleRendererItem relies on BaseVertexIndex not being zero.

UE - Rendering Architecture - RHI - May 20, 2019

The root of this issue is that FLocalVertexFactory is doing manual vertex fetch in the shader. In HLSL, this relies on SV_VertexId. In GLSL, it's gl_VertexId. HLSL does not include the base vertex i ...

3DS Max 2019 asset has incorrect object position and rotation when imported in Datasmith

UE - Editor - Content Pipeline - Datasmith - Exporters - May 20, 2019

When this asset is imported into 4.22.1(4.22E0) it has incorrect object position and rotation. In 4.21.2 (4.21E3) the asset has the correct object position and rotation. ...

Surface snapping attached actors cause unexpected behavior

Tools - May 17, 2019

Surface snapping causes erratic changes in scale to StaticMeshActors that have children of the same type. The user also has provided a potential solution to this bug (Please see the code below. N ...

RemoteMac.cs fails to build if ProjectFile is null

UE - Platform - Mobile - May 17, 2019

See CL 6473818. Remote compiling on a Mac is triggering a NullReferenceException for me, making me unable to build. I was able to delete the crashing lines locally to work around it for now.line 91 ...

Crash: nullptr in FindViewComponentForActor when ActorComponent is attached to Character with Camera Component.

UE - Gameplay - May 17, 2019

Selecting an Actor with a Camera and a C++ inherited Blueprint Component that has sub-components,then compiling the BP component leads to a crash. Upon Debugging the Crash Call Stack: FindViewComp ...

Action RPG- ARPG CharacterBase::GetHealth() Null Crash

Docs - Samples - May 16, 2019

In Action RPG Sample, NPC Blueprints "NPC_Goblin_Level_01,02.03"  cannot be Duplicated.   Crash results lead to ARPGCharacterBase.Cpp Get Health function. float ARPGCharacterBase::GetHealth() const ...

Tooltips incorrect when changing FExpressionInput of UMaterialExpressionTextureSample

UE - Rendering Architecture - Materials - May 16, 2019

It seems that the display of ToolTip is displayed in the order of declared UPROPERTY () of the code.[Image Removed] ...

The screen will be darker than other platforms(Android,PC/Mac preview) on IOS if both MSAA and MobileTonemapperFilm enabled

UE - Platform - Mobile - May 16, 2019

[Image Removed] [Image Removed] [Image Removed] [Image Removed] ...

Remapping morph targets will crash if you have a cloth section

OLD - Anim - May 15, 2019

By calling FLODUtilities::SimplifySkeletalMeshLOD on a mesh with cloth sections that is set to remap morph targets, a crash occurs. This seems to be due to the indexing of sections with/without incl ...